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Lower Hybrid Oscillations in Multicomponent Space Plasmas Subjected to Ion Cyclotron Waves
Lower Hybrid Oscillations in Multicomponent Space Plasmas Subjected to Ion Cyclotron Waves
- Source :
- Journal of Geophysical Research. 102(A1)
- Publication Year :
- 1997
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1997.
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Abstract
- It is found that in multicomponent plasmas subjected to Alfven or fast magnetosonic waves, such as are observed in regions of the outer plasmasphere and ring current-plasmapause overlap, lower hybrid oscillations are generated. The addition of a minor heavy ion component to a proton-electron plasma significantly lowers the low-frequency electric wave amplitude needed for lower hybrid wave excitation. It is found that the lower hybrid wave energy density level is determined by the nonlinear process of induced scattering by ions and electrons; hydrogen ions in the region of resonant velocities are accelerated; and nonresonant particles are weakly heated due to the induced scattering. For a given example, the light resonant ions have an energy gain factor of 20, leading to the development of a high-energy tail in the H(+) distribution function due to low-frequency waves.
- Subjects :
- Plasma Physics
Subjects
Details
- Language :
- English
- ISSN :
- 01480227
- Volume :
- 102
- Issue :
- A1
- Database :
- NASA Technical Reports
- Journal :
- Journal of Geophysical Research
- Notes :
- NSF ATM-95-23699, , UPN-432-20-00, , NGT-51335
- Publication Type :
- Report
- Accession number :
- edsnas.19970022140
- Document Type :
- Report
- Full Text :
- https://doi.org/10.1029/96JA02321